Machine for gumming and sharpening gin-saws



(No Medal.) 2 Sheets-Sheet 1.

T. ENANGE.

MACHINE FOR GUMMING AND SHA'RPEITING GINSAWS.

No. 399,919. PatentedMaJr. 19, 1889.

l vflmeooeo V jfyyemtot W M601 (No Model.) 2 Sheets-Sheet 2.,

T. H. NANCE.

MACHINE FOR GUMMING AND SHARPENING GIN SAWS. No. 399,919. Patented Mar.19, 1889..

" q vitweaoeo 5140a" foz W mwnerjfinee,

V 351;; fitter/M0130 ATENT OFFICE.

TURNER IIUNT NANCE, OF TALLADEGA, ALABAMA.

MACHINE FOR GUNHVIING AND SHARPENING GIN-SAWS.

SPECIFICATION forming part of Letters Patent No. 399,919, dated March19, 1889. A

Application filed October 16, 1888. Serial No. 288 225. (No model.)

To all whom it may concern:

Be it known that I, TURNER HUNT NANCE, a citizen of the United States,residing at Talladega, in the county of Talladega and State of Alabama,have invented a new and useful Improvement in Machines for Gumming andSharpening Gin-Saws, of which the following is a specification.

My invention relates to an improvement in machines for gunnning andsharpening ginsaws; and it consists in the peculiar construction andcombination of devices, that will be more fully set forth hereinafter,and particu larly pointed out in the claims.

This invention is an improvement on the machine described in LettersPatent of the United States No. 358,874, granted to me March 8, 1887;and the object of my present improvement is to simplify the constructionof the machine and increase the utility thereof.

In the accompanying drawings, Figure 1 is a side elevation of a sawsharpener and gummer embodying my improvements arranged in position tooperate 011 the teeth of a ginsaw. Fig. 2 is a top plan view of thesame. Fig. 3 is a vertical longitudinal sectional view taken on a' so ofFig. 2. Figs. 4 and 5 are detail perspective views of modified forms ofmy invention. Fig. 6 is a detail view showing the slot in the arm I.Fig. 7 is a detailed perspective View of the punch and the gage.

A represents a shaft of a cotton-gin. B represents a series of saws,which are attached to the said shaft; and 0 represents the usual blocks,which are used to separate the saws on the shaft and to space them asuitable dis tance apart.

D represents the body or frame of a saw gumming and sharpening machine,which consists of a longitudinal bar of metal provided at one end with aslot, E, which is open, as shown.

If preferred, the body or frame may be composed of three or morelongitudinal bars securely fastened together.

The slot E bifurcates the outer end of the body or frame and forms apair of arms, Gr H. The latter has a recess, I, of suitable length onits outer side, and in the said recess is arranged the inner end of anarm, I. A pivotal bolt or screw, K, extends through an opening near theinner end of arm I, and engages a transverse threaded opening in the armI-I, thus pivoting the arm I to the body or frame, and said arm I has acurved slot, L, which is concentric with the pivot K, and is engaged bya set-screw, M, which also enters the arm II, and is adapted .to securethe arm I to the body or frame at any desired angle.

N represents a circular disk or die-plate of suitable diameter, which isarranged in the slot E, and is clamped against the inner side of the armG by means ofa set-screw, O. Said die-plate has a series of peripheraltangential V-shaped notches, P, which are arranged at substantiallyright angles to each other, as shown, and are adapted to register withthe upper side of the body or frame D, near the inner end of slot E. Thewidth of the disk or die-plate N is somewhat less than the width of theslot E, thereby adapting the edge of the gin-saw to be inserted in saidslot between the opposing sides of the die-plate or disk and 'the arm H,as shown in Fi 2.

R represents a stud, which extends transversely through the body orframe, and has an enlarged head, S, that projects from one side thereof.

T represents a punch, which may be either single or double ended, andhas its ends beveled downward on their upper sides .and inward on theirouter edges, as shown. The said punch is made of steel, is arranged onthe bed or body D, and is pivoted theretoby means of a screw, U. Thefront end of the punch is adapted to enter the notch P of the die-plateor disk, which registers with the upper side of the frame or body. Onthe beveled outer side of the front end of the punch is arranged a gage,V, the same having a longitudinal slot, WV, through which extends aset-screw, X, that enters a threaded opening in the punch, and isthereby adapted to secure the gage thereto at any desired adjustment.The depth of the cut of the punch is regulated by increasing ordecreasing the distance between the outer ends of the punch and gage byadjusting the latter, as will be readily understood.

Y represents a handle, which has a threaded stud, Z, at its front end,that is'screwed into a longitudinal threaded opening in the rear end ofthe frame or body D, the said handle being thereby secured to the saidframe or body, and being adapted to be grasped by the left hand of theoperator.

A represents a circular disk, which is made of metal, and is pivotedeccentrically on the head of stud R by means of a bolt or screw, B.

C represents a rod, which has its inner end screwed into'an opening inone side of the eccentric, and to the outer end of the said rod issecured a handle, D, which is adapted. to be grasped by the right handof the operator.

E represents a spring-arm, which is secured to the outer side of theframe or body D,near the rear end thereof, by a screw, F, and the freeend of the said spring-arm is bent inward at right angles and bearsagainst the outer side of the punch and presses the latter against oneside of the eccentric. hen the handle D is moved outward from the frame,the eccentric is turned, and the spring-arm moves the front end of thepunch laterally beyond the engaging edge of the saw. The operator thenurges the device forward with his left hand to engage the gage V withthe out between two of the saw-teeth, and thereby arrange the projectingend of the punch against one side of the saw, and he then moves thehandle D inward, thus causing the eccentric cam to move the punchlaterally and cause the engaging end thereof to deepen the out betweenthe saw-teeth, as will be readily understood.

In order to prevent the punch from moving vertically 011 the body orframe, I provide a screw, G, which engages a threaded opening in theupper side of arm H, and has its head bearing on the free end of thepunch, as shown. At the outer end of the arm I is a weight, H, whichserves to balance the device on the gin-saw, said arm bearing on one ofthe blocks, as shown.

In Fig. 4 I illustrate a modified form of my invention, in which Idiscard the spring-arm E and substitute therefor a coiled extensilespring, a, which is arranged on one end of a movable pin or bolt, 1),that works in a transverse opening in the frame or body, has a nut,

0, which bears against the outer end of the spring, and has its oppositeend curved upward to form a semicircular arm, cl, that bears against theouter side of the punch.

I11 Fig. 5 I illustrate another modified form of my invention, in whichthe gage has a lateral arm or head, 9, at its rear end, which bears onthe upper side of the punch, and has an enlarged circular opening, f,through which passes a stem or shank of a set-screw, 11, said set-screwentering a threaded opening in the upper side of the punch, and havingits enlarged head bearing on the plate or arm 6, and securing the gageto the punch at any desired adjustment.

Having thus described my invention, I

claim 1. In a saw gumming and sharpening machine, the laterally-movablepunch pivoted directly on the body or frame, and having its outercutting end beveled on its upper side to form a cutting-edge,substantially as described.

2. I11 a saw gumming and sharpening machine, the punch having the gage Vclamped to one side and movable toward and from the cutting-point of thepunch, substantially as described.

3. In a saw gumming and sharpening machine, the laterally-movable punchpivoted on the body or frame, and the screw G, engaging the upper sideof the cutting end of the punch to prevent the latter from rising,substantially as described.

4. In a saw gumming and sharpening machine, the punch pivoted directlyto the frame or body and laterally movable thereon, the operating-cambearing on one side of the punch, and the spring bearing on the oppositeside thereof, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

TURNER HUNT NANCE.

\Vitnesses P. I'IAINE, J. H. ELLIOTT.

